mirror of
https://github.com/JeffersGlass/DDS_VFO.git
synced 2024-11-27 02:37:37 -06:00
588 lines
18 KiB
C++
588 lines
18 KiB
C++
#include <Encoder.h>
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#include <Wire.h>
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#include <LiquidCrystal.h>
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#include <si5351.h>
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//-----------Variables & Declarations---------------
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/*
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* The current and desired LISTENING FREQUENCY, which is not always the frequency being output by the Si5351.
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* In 'testing' and 'basic' modes, the output freqeuncy is equal to currFreq
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* In 'polyakov' mode, the output frequency is half of curFreq
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* In BFO mode, .........
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* These adjustments are mode in the setFrequency_5351 function depending on the current mode held in currMode
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*/
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long currFreq = 1800000;
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//FOR CQ MODE:
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char CQ[] = "-.-. --.-";
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char DE[] = "-.. .";
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char morseCallsign[] = "-.- -.- ----. .--- . ..-.";
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int morseCallsignLength = 25;
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long morseElementLength = 70; //ms
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//FOR WSPR MODE
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int correctionFactor = 0; //adjusts the offset of the Si5351
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int WSPR_TRANSMISSION_DATA[] = { //KK9JEF EN61 30
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3,3,2,0,0,0,0,0,3,0,0,2,1,1,1,0,0,2,1,2,2,1,0,3,1,3,1,2,2,0,
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0,0,2,2,1,0,2,3,0,1,2,0,2,2,2,2,3,2,3,1,2,0,1,3,2,3,2,0,2,1,
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1,0,1,0,0,2,2,1,1,0,1,0,3,0,1,2,1,0,2,3,0,0,1,0,1,1,2,2,2,3,
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1,0,1,2,3,2,2,0,1,2,2,0,2,0,1,2,2,3,0,2,1,1,1,0,1,3,2,2,3,1,
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0,1,0,2,2,1,1,1,2,0,0,0,0,3,0,1,0,2,3,1,2,2,2,2,0,2,2,3,1,0,
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1,2,1,3,2,0,2,3,3,2,0,2};
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/*
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int WSPR_TRANSMISSION_DATA[] = { //KK9JEF EN61 27
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3,3,2,0,0,2,0,2,3,0,0,2,1,3,1,2,0,2,1,0,2,3,0,1,1,1,1,0,2,2,
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0,0,2,2,1,2,2,3,0,1,2,2,2,2,2,0,3,0,3,1,2,0,1,3,2,1,2,0,2,3,
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1,0,1,2,0,2,2,1,1,0,1,0,3,2,1,0,1,2,2,3,0,0,1,0,1,1,2,2,2,3,
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1,2,1,2,3,0,2,0,1,0,2,0,2,0,1,2,2,3,0,0,1,1,1,0,1,1,2,0,3,3,
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0,3,0,0,2,1,1,3,2,0,0,2,0,1,0,3,0,2,3,1,2,2,2,0,0,2,2,3,1,0,
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1,0,1,1,2,0,2,1,3,0,0,2};
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*/
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//-----Enumerations of frequency steps and their labels for each mode----//
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enum modes{mode_testing = 0, mode_basic, mode_polyakov, mode_bfo, mode_WSPR, mode_CQ};
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const int NUM_MODES = 6;
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int currMode = mode_basic;
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char* modeNames[NUM_MODES] = {"TEST", "VFO", "POLYA", "BFO", "WSPR", "CQ"};
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long steps[][10] = { //don't forget to update the NUM_STEP_OPTIONS array below
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{10000000, 5000000, 1000000, 500000, 100000, 10000, 1000, 10, 1}, //testing
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{10000, 1000, 100, 10}, //basic
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{1000, 100, 10, 1}, //polyakov
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{1000, 100, 10, 1}, //bfo
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{5}, //WSPR
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{500} //CQ
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};
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const int NUM_STEP_OPTIONS[NUM_MODES] = {
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10, //testing
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4, //basic
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4, //polyakov
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4, //bfo
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1, //wspr
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1 //cq
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};
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char* stepNames[][10] = {
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{" 10MHz", " 5MHz", " 1MHz", "500Khz", "100KHz", " 10KHz", " 1KHz", " 100Hz", " 10Hz", " 1 Hz"}, //basic
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{" 10KHz", " 1KHz", " 100Hz", " 10 Hz"}, //basic
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{" 1KHz", " 100 Hz", " 10 Hz", " 1 Hz"}, //polyakov
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{" 1KHz", " 100 Hz", " 10 Hz", " 1 Hz"}, //BFO
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{" 5 Hz"}, //WSPR
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{" 500Hz"} //CQ
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};
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int stepIndex = 0; // holds the index of the currently selected step value
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//-----AMATEUR BAND DEFININTIONS----------------//
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//See function "getCurrentBand" below as well
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const int NUM_BANDS = 10;
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char* bandNames[NUM_BANDS] = {"160m", "80m", "60m", "40m", "30m", "20m", "17m", "15m", "12m", "10m"};
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char* OUT_OF_BAND_LABEL = "OOB";
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long bandEdges[NUM_BANDS][2] = {
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{1800000, 2000000}, //160m
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{3500000, 4000000}, //80m
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{5288600, 5288800},
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{7000000, 7300000}, //40m
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{10100000, 10150000}, //30m
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{14000000, 14350000}, //20m
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{18068000, 18168000}, //17m
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{21000000, 21450000}, //15m
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{24890000, 24990000}, //12m
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{28000000, 29700000} //10m
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};
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long WSPRbandEdges[NUM_BANDS][2] = {
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{1838000, 1838200}, //160m
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{3594000, 3594200}, //80m
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{5288600, 5288800}, //60m
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{7040000, 7040200}, //40m
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{10140100, 10140300}, //30m
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{14097000, 14097200}, //20m
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{18106000, 18106200}, //17m
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{21096000, 21096200}, //15m
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{24926000, 24926200}, //12m
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{28126000, 28126200}, //10m
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};
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/*
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* Holds the last-seen frequency within each band. The list below is also the default location at bootup.
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* This array is updated when the BAND button is used to change between bands.
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* If the used has scrolled outside of a defined band and then presses the BAND button, they will
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* still be advanced to the next band, but the band-return location will not be updated
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*/
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long lastBandFreq[NUM_BANDS] = {
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1800000, //160m
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3500000, //80m
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5288600, //60m
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7000000, //40m
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10100000, //30m
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14000000, //20m
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18068000, //17m
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21000000, //15m
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24890000, //12m
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28000000 //10m
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};
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/*Information on bandplan permissions and recommended communication modes is contained in the
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* methods getPermission and getBandplanModes below
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*/
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//---------------------------------------------
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long lastButtonPress[] = {0,0,0,0,0,0,0}; //holds the last timestamp, from millis(), that a pin changed state. Directly references the arduino output pin numbers, length may need to be increased
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boolean buttonActive[] = {false, false, false, false, false, false, false};
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long encoderPosition = 0;
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boolean displayNeedsUpdate;
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const long MIN_FREQ = 8500;
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const long MAX_FREQ = 150000000;
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//Onboard LED Steup
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const int PIN_LED = 13;
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//---------LCD SETUP-------//
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int PIN_RS = 7;
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int PIN_EN = 8;
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int PIN_DB4 = 9;
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int PIN_DB5 = 10;
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int PIN_DB6 = 11;
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int PIN_DB7 = 12;
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LiquidCrystal lcd(PIN_RS, PIN_EN, PIN_DB4, PIN_DB5, PIN_DB6, PIN_DB7);
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//--------Si5351 Declaration---------------//
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Si5351 si5351;
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//SDA is on pin A4 for Arduino Uno
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//SCL is on pin A5 for Arduino Uno
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//--------Tuning Knob Interrupt Pins-------//
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//Encoder knob(2, 3), pushbutton on 1
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Encoder encoder(2, 3);
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const int PIN_BUTTON_ENCODER = 1;
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//Button Pins//
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const int PIN_BUTTON_MODE = 4;
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const int PIN_BUTTON_BAND = 0;
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const int BUTTON_DEBOUNCE_TIME = 10; //milliseconds
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//SWR Sensor Pins
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const int PIN_SWR_FORWARD = A1;
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const int PIN_SWR_REVERSE = A0;
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void setup(){
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// inialize LCD, display welcome message
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lcd.begin(20, 4);
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delay(250);
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lcd.setCursor(4, 1);
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lcd.print("VFO STARTING");
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si5351.init(SI5351_CRYSTAL_LOAD_8PF, 0);
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si5351.set_freq(currFreq * 100ULL, 0ULL, SI5351_CLK0);
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enableOutput();
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si5351.drive_strength(SI5351_CLK0, SI5351_DRIVE_8MA);
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si5351.output_enable(SI5351_CLK1, 0);
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si5351.output_enable(SI5351_CLK2, 0);
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delay(750);
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pinMode(PIN_LED, OUTPUT);
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digitalWrite(PIN_LED, LOW);
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pinMode(PIN_BUTTON_ENCODER, INPUT);
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digitalWrite(PIN_BUTTON_ENCODER, HIGH);
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pinMode(PIN_BUTTON_MODE, INPUT);
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digitalWrite(PIN_BUTTON_MODE, HIGH);
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pinMode(PIN_BUTTON_BAND, INPUT);
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digitalWrite(PIN_BUTTON_BAND, HIGH);
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pinMode(PIN_SWR_FORWARD, INPUT);
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pinMode(PIN_SWR_REVERSE, INPUT);
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lcd.clear();
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lcd.setCursor(2, 7);
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lcd.print("WELCOME!");
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delay(500);
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displayInfo();
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}
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void loop(){
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if (displayNeedsUpdate) {displayInfo();}
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delay(80);
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//detect whether encoder has changed position
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long reading = encoder.read();
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long encoderChange = reading - encoderPosition;
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encoderPosition = reading;
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displayNeedsUpdate = false;
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//step up or down or change step size, for encoder turns
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if ((encoderChange > 0)){currFreq += steps[currMode][stepIndex]; currFreq = min(currFreq, MAX_FREQ); setFrequency_5351(currFreq); displayNeedsUpdate = true;}
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if ((encoderChange < 0)){currFreq -= steps[currMode][stepIndex]; currFreq = max(currFreq, MIN_FREQ); setFrequency_5351(currFreq); displayNeedsUpdate = true;}
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//pressing the encoder button increments through the possible step sizes for each mode;
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//in WSPR or CQ modes, the encoder button triggers the transmission of WSPR or a CQ, respectively.
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if (checkButtonPress(PIN_BUTTON_ENCODER)){
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if (currMode == mode_testing || currMode == mode_basic || currMode == mode_polyakov || currMode == mode_bfo) {
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stepIndex = (stepIndex + 1) % (NUM_STEP_OPTIONS[currMode]);
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displayNeedsUpdate = true;
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}
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else if (currMode == mode_WSPR){
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transmitWSPR();
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}
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else if (currMode == mode_CQ){
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transmitMorseWord(CQ);
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transmitSpace();
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transmitMorseWord(CQ);
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transmitSpace();
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transmitMorseWord(DE);
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transmitSpace();
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transmitMorseWord(morseCallsign);
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transmitSpace();
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transmitMorseWord(morseCallsign);
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}
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}
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//pressing the mode button cycles through the available modes
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if (checkButtonPress(PIN_BUTTON_MODE)){
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currMode = (currMode+1) % NUM_MODES;
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stepIndex = 0;
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if (currMode == mode_WSPR){ //If entering WSPR mode, set the current freqency to the bottom of the WSPR band slice
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currFreq = findWSPRBand();
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}
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if (currMode == mode_WSPR || currMode == mode_CQ){
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disableOutput(); //In WSPR or CQ mode, the transmitter should be off until manually triggered
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}
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else{
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enableOutput(); //In all other modes, the output of the VFO is on by default
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}
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setFrequency_5351(currFreq);
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displayNeedsUpdate = true;
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}
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/*The band button: if currFreq is inside an amateur band, save that frequency as the one to return to when
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* the user returns to this band, and jump to the return frequency for the next higher band. Otherwise,
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* just jump to the next higher band
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*/
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if (checkButtonPress(PIN_BUTTON_BAND)){
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int currBand = getCurrentBand();
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if (currBand >= 0){
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lastBandFreq[currBand] = currFreq;
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currFreq = lastBandFreq[(getCurrentBand() + 1) % NUM_BANDS];
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setFrequency_5351(currFreq);
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}
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else if (currBand == -2 || currBand == -3){
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currFreq = lastBandFreq[0];
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setFrequency_5351(currFreq);
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}
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else if (currBand == -1){
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for (int i = 0; i < NUM_BANDS; i++){
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if (currFreq < lastBandFreq[i]){currFreq = lastBandFreq[i]; setFrequency_5351(currFreq); break;}
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}
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}
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if (currMode == mode_WSPR){ //WSPR mode behaves differntly from other modes
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currFreq = WSPRbandEdges[getCurrentBand()][0];
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setFrequency_5351(currFreq);
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}
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displayNeedsUpdate = true;
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}
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}
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void displayInfo(){
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lcd.clear();
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// frequency information be centeredw within 11 spaces on the second line:
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if (currFreq >= 100000000) lcd.setCursor(3, 0);
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else if (currFreq > 10000000) lcd.setCursor(4, 0);
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else lcd.setCursor(5, 0);
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int mhz = int(currFreq/ 1000000);
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int khz = int((currFreq - (mhz*1000000)) / 1000);
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int hz = int(currFreq % 1000);
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int khzPad = 0;
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if (khz < 100) khzPad++;
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if (khz < 10) khzPad++;
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int hzPad = 0;
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if (hz < 100) hzPad++;
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if (hz < 10) hzPad++;
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lcd.print(mhz);
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lcd.print(".");
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for (int i = 0; i < khzPad; i++) lcd.print("0");
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lcd.print(khz);
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lcd.print(".");
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for (int i = 0; i < hzPad; i++) lcd.print("0");
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lcd.print(hz);
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//The current amateur band is printed in the top-right corner
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int currBand = getCurrentBand();
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if (currBand >= 0){
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char* currBandName = bandNames[currBand];
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lcd.setCursor(20-strlen(currBandName), 0);
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lcd.print(currBandName);
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}
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else{
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lcd.setCursor(20-strlen(OUT_OF_BAND_LABEL), 0);
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lcd.print(OUT_OF_BAND_LABEL);
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}
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//The license needed to operate on this frequency (ARRL, USA ONLY) is printed just below the band label
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lcd.setCursor (19, 1);
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lcd.print(getPermission());
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//Step Information should take the middle 11 spaces on the 3nd line
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//The first 5 symbols are "STEP:", leaving 6 chars for step info.
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lcd.setCursor(4, 2);
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lcd.print("STEP:");
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lcd.print(stepNames[currMode][stepIndex]);
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//Callsign is printed at the beginning of the 4th line
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lcd.setCursor(0, 3);
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lcd.print("KK9JEF");
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//The mode is printed on the 4th line with no label
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//lcd.setCursor(6, 3);
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lcd.setCursor(20-strlen(modeNames[currMode]), 3);
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lcd.print(modeNames[currMode]);
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//DEBUG
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//lcd.setCursor(0,0);
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//lcd.print(getCurrentBand());
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/*float fwd = analogRead(PIN_SWR_FORWARD);
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float rev = analogRead(PIN_SWR_REVERSE);
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float gamma = rev/fwd;
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float swr = (1 + abs(gamma)) / (1 - abs(gamma));
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lcd.setCursor(0, 1);
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lcd.print(int(fwd));
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lcd.setCursor(4, 1);
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lcd.print(int(rev));
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lcd.setCursor(8, 1);
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lcd.print(gamma);
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lcd.setCursor(14, 1);
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lcd.print(swr);*/
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}
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boolean checkButtonPress(int pin){
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long time = millis();
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if (buttonActive[pin] && digitalRead(pin) == HIGH){
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buttonActive[pin] = false;
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lastButtonPress[pin] = time;
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}
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else if (digitalRead(pin) == LOW && !buttonActive[pin] && time > lastButtonPress[pin] + BUTTON_DEBOUNCE_TIME){
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buttonActive[pin] = true;
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lastButtonPress[pin] = time;
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return true;
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}
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return false;
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}
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void setFrequency_5351(long newFreq){
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switch (currMode){
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case mode_testing:
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si5351.set_freq((newFreq + correctionFactor) * 100ULL, 0ULL, SI5351_CLK0);
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break;
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case mode_basic:
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si5351.set_freq(newFreq * 100ULL, 0ULL, SI5351_CLK0);
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break;
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case mode_polyakov:
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si5351.set_freq((newFreq / 2) * 100ULL, 0ULL, SI5351_CLK0);
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break;
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case mode_bfo:
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si5351.set_freq(newFreq * 100ULL, 0ULL, SI5351_CLK0);
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break;
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}
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}
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void enableOutput(){
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si5351.output_enable(SI5351_CLK0, 1);
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digitalWrite(PIN_LED, HIGH);
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}
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void disableOutput(){
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si5351.output_enable(SI5351_CLK0, 0);
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digitalWrite(PIN_LED, LOW);
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}
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//Returns the index of the current amateur radio band based on currFreq. Does not include the 60m band
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//Returns -1 if out of band, but within the HF amateur turning range
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//returns -2 if out of band and lower than the lowest defined band
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//returns -3 if out of band and higher than the highest defined band
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int getCurrentBand(){
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if (currFreq < bandEdges[0][0]) return -2; //we are lower than the lower edge of the lowest defined band
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if (currFreq > bandEdges[NUM_BANDS-1][1]) return -3; //We are higher than the upper edge of the highest defined band
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for (int i = 0; i < NUM_BANDS; i++){
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if (currFreq >= bandEdges[i][0] && currFreq <= bandEdges[i][1]){return i;} //We are within a band
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}
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return -1;
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}
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char getPermission(){
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if (getCurrentBand() < 0) return ' ';
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//160m
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if (currFreq >= 1800000 && currFreq <= 2000000) return 'G';
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//80m
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if (currFreq >= 3525000 && currFreq <= 3600000) return 'T';
|
|
if ((currFreq >= 3525000 && currFreq <= 3600000) || (currFreq >= 3800000 && currFreq <= 4000000)) return 'G';
|
|
if ((currFreq >= 3525000 && currFreq <= 3600000) || (currFreq >= 3700000 && currFreq <= 4000000)) return 'A';
|
|
if (currFreq >= 3500000 && currFreq <= 4000000) return 'E';
|
|
|
|
//40m
|
|
if (currFreq >= 7025000 && currFreq <= 7125000) return 'T';
|
|
if ((currFreq >= 7025000 && currFreq <= 7125000) || (currFreq >= 7175000 && currFreq <= 7300000)) return 'G';
|
|
if (currFreq >= 7025000 && currFreq <= 7300000) return 'A';
|
|
if (currFreq >= 7000000 && currFreq <= 7300000) return 'E';
|
|
|
|
//30m
|
|
if (currFreq >= 10100000 && currFreq <= 10150000) return 'G';
|
|
|
|
//20m
|
|
if ((currFreq >= 14025000 && currFreq <= 14150000) || (currFreq >= 14225000 && currFreq <= 14350000)) return 'G';
|
|
if ((currFreq >= 14025000 && currFreq <= 14150000) || (currFreq >= 14175000 && currFreq <= 14350000)) return 'A';
|
|
if (currFreq >= 14000000 && currFreq <= 14350000) return 'E';
|
|
|
|
//17m
|
|
if (currFreq >= 18068000 && currFreq <= 18168000) return 'G';
|
|
|
|
//15m
|
|
if (currFreq >= 21025000 && currFreq <= 21200000) return 'T';
|
|
if ((currFreq >= 21025000 && currFreq <= 21200000) || (currFreq >= 21275000 && currFreq <= 21450000)) return 'G';
|
|
if ((currFreq >= 21025000 && currFreq <= 21200000) || (currFreq >= 21225000 && currFreq <= 21450000)) return 'A';
|
|
if (currFreq >= 21000000 && currFreq <= 21450000) return 'E';
|
|
|
|
//12m
|
|
if (currFreq >= 24890000 && currFreq <= 24990000) return 'G';
|
|
|
|
//10m
|
|
if (currFreq >= 28000000 && currFreq <= 28500000) return 'T';
|
|
if (currFreq >= 28000000 && currFreq <= 29700000) return 'G';
|
|
|
|
return 'X';
|
|
}
|
|
|
|
void transmitWSPR(){
|
|
long startTime = millis();
|
|
enableOutput();
|
|
for (int dataFrame = 0; dataFrame < 162; dataFrame++){
|
|
si5351.set_freq((currFreq + correctionFactor) * 100ULL + (146*WSPR_TRANSMISSION_DATA[dataFrame]*1ULL), SI5351_PLL_FIXED, SI5351_CLK0);
|
|
displayWSPR(dataFrame);
|
|
while (millis() < startTime + 683*(dataFrame+1)){
|
|
if (checkButtonPress(PIN_BUTTON_ENCODER) || dataFrame > 162){
|
|
goto escape;
|
|
}
|
|
}
|
|
}
|
|
escape:
|
|
disableOutput();
|
|
displayNeedsUpdate = true;
|
|
}
|
|
|
|
void displayWSPR(int frame){
|
|
lcd.clear();
|
|
|
|
lcd.setCursor(0,0);
|
|
long printFreq = currFreq * 100ULL + (146*WSPR_TRANSMISSION_DATA[frame]*1ULL);
|
|
lcd.print(printFreq);
|
|
|
|
//current frame and data are printed on the 3rd line
|
|
lcd.setCursor(0, 2);
|
|
lcd.print("FRAME:");
|
|
lcd.setCursor(6, 2);
|
|
lcd.print(frame);
|
|
lcd.setCursor(10, 2);
|
|
lcd.print("DATA:");
|
|
lcd.setCursor(15, 2);
|
|
lcd.print(WSPR_TRANSMISSION_DATA[frame]);
|
|
|
|
//The current amateur band is printed in the top-right corner
|
|
int currBand = getCurrentBand();
|
|
if (currBand >= 0){
|
|
char* currBandName = bandNames[currBand];
|
|
lcd.setCursor(20-strlen(currBandName), 0);
|
|
lcd.print(currBandName);
|
|
}
|
|
else{
|
|
lcd.setCursor(20-strlen(OUT_OF_BAND_LABEL), 0);
|
|
lcd.print(OUT_OF_BAND_LABEL);
|
|
}
|
|
|
|
//Callsign is printed at the beginning of the 4th line
|
|
lcd.setCursor(0, 3);
|
|
lcd.print("KK9JEF");
|
|
|
|
//The mode is printed on the 4th line with no label
|
|
//lcd.setCursor(6, 3);
|
|
lcd.setCursor(16, 3);
|
|
lcd.print("WSPR");
|
|
}
|
|
|
|
//When switching into WSPR mode, the VFO jumps to the WSPR portion of the appropriate band; if not inside a band when switching to WSPR mode,
|
|
//This fucntion determines where to jump to.
|
|
//Currently always resets to the bottom of the lowest band
|
|
long findWSPRBand(){
|
|
/*switch (getCurrentBand()){
|
|
case -2: //Below the lowest defined band
|
|
currFreq = WSPRbandEdges[0][0]; //set frequency to the bottom edge of lowest band
|
|
break;
|
|
case -3: //Above the highest defined band
|
|
currFreq = WSPRbandEdges[NUM_BANDS-1][0]; //Set frequency to bottom edge of highest band
|
|
break;
|
|
case -1: //in between bands
|
|
break;
|
|
default:
|
|
currFreq = currFreq = (currFreq % 5); //round to the nearest multiple of 5 hz, for readability in WSPR mode
|
|
break;
|
|
}
|
|
*/
|
|
return WSPRbandEdges[0][0];
|
|
}
|
|
|
|
void transmitMorseWord(char singleWord[]){
|
|
for (int i = 0; i < strlen(singleWord); i++){
|
|
if (singleWord[i] == '-') transmitDash();
|
|
else if (singleWord[i] == '.') transmitDot();
|
|
else transmitIntracharacter();
|
|
}
|
|
}
|
|
|
|
void transmitDash(){
|
|
enableOutput();
|
|
delay(morseElementLength * 3);
|
|
disableOutput();
|
|
delay(morseElementLength);
|
|
}
|
|
|
|
void transmitDot(){
|
|
enableOutput();
|
|
delay(morseElementLength);
|
|
disableOutput();
|
|
delay(morseElementLength);
|
|
}
|
|
|
|
void transmitIntracharacter(){
|
|
disableOutput();
|
|
delay(morseElementLength*2); //each element naturally has a one-dot space built in
|
|
}
|
|
|
|
void transmitSpace(){
|
|
disableOutput();
|
|
delay(morseElementLength*6); //each element naturally has a one-dot space built in that follows it.
|
|
}
|
|
|